O2 XDA Serra vs Xolo Black 1X

Compare recorded specifications, size and practical differences.

+ Add a third phone

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

  • Width

    XDA Serra: 21 mm narrower

    XDA Serra:
    51 mm
    Black 1X:
    72 mm
  • Screen diagonal

    XDA Serra: 2.2 in smaller diagonal

    XDA Serra:
    2.8 in
    Black 1X:
    5 in
  • Chipset

    XDA Serra:
    Qualcomm MSM7201A
    Black 1X:
    Mediatek MT6753 (28 nm)
  • Depth

    Black 1X: 10.5 mm thinner

    XDA Serra:
    18.1 mm
    Black 1X:
    7.6 mm
  • Height

    XDA Serra: 42.6 mm shorter

    XDA Serra:
    102 mm
    Black 1X:
    144.6 mm
  • Release year

    XDA Serra:
    2008
    Black 1X:
    2015

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

  1. 1. XDA Serra

    Height:
    102 mm
    Width:
    51 mm
    Depth:
    18.1 mm +10.5 mm versus Black 1X
    Weight:
    165 g
  2. 2. Black 1X

    Height:
    144.6 mm +42.6 mm versus XDA Serra
    Width:
    72 mm +21 mm versus XDA Serra
    Depth:
    7.6 mm
    Weight:
    Unknown

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

  1. 1. XDA Serra

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Black 1X

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²

Black 1X has approximately 183.9% more rectangular screen area than XDA Serra.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for XDA Serra, Black 1X, compared at the same storage capacity.
StorageXDA SerraBlack 1X
32 GB Unknown 3 GB RAM
XDA Serra: Original memory entry

288 MB RAM · 512 MB ROM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. XDA Serra

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD (dedicated slot)

2. Black 1X

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. XDA Serra

    1340 mAh

  2. 2. Black 1X

    2400 mAh

    +1060 mAh versus XDA Serra

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. XDA Serra2. Black 1X

Everyday essentials
Everyday essentials — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
Dimensions (HxWxD)
  • 102 Х 51 Х 18.1 mm
  • 144.6 Х 72 Х 7.6 mm
Weight
  • 165 g
  • 0 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" inch
  • 5" inch
Screen resolution
  • 480 x 640 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 288 MB RAM
  • 512 MB ROM
  • 32 GB
  • 3 GB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1340 mAh
  • Removable Li-Ion
  • 2400 mAh
  • Non-removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 5.1 (Lollipop)
  • upgradable to 6.0 (Marshmallow); HIVE Atlas UI
Chipset
  • Qualcomm MSM7201A
  • Mediatek MT6753 (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 68.9 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 46.7%
  • 66.2%
PPI /points per inch/
  • 286 PPI
  • 441 PPI
Screen protection Unknown
  • Asahi Dragontrail Glass
Camera and Video
Camera and Video — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
Rear camera, main
  • 3.15 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 13 MP
  • PDAF
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA videocall camera
  • 5 MP
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
Processor CPU
  • 528 MHz ARM 11
  • Octa-core 1.3 GHz Cortex-A53
Graphics processor GPU
  • Adreno 130
  • Mali-T720MP3
GeekBench 4 Single Core * Unknown
  • 617
GeekBench 4 Multi-Core * Unknown
  • 2697
General specs
General specs — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
Release date
  • 2008
  • July
  • 2015
  • October
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 140 EUR
Battery life
  • Stand by time- Up to 406 h Talking time- Up to 8 h
  • Stand by time- Up to 394 h (2G) / Up to 354 h (3G) Talking time- Up to 27 h (2G) / Up to 12 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
SIM card
  • Mini-SIM
  • Hybrid Dual SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE 1800 TD-LTE 2300
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA 42.2/7.2 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • miniUSB
  • microUSB 2.0
  • USB Host
Bluetooth
  • 2.0
  • A2DP
  • 4.0
  • A2DP
Harmful irradiation Unknown
  • SAR EU - 0.09 W/kg (head) 0.14 W/kg (body)
Music and Audio
Music and Audio — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
Radio
  • Stereo FM radio
  • RDS
  • FM radio
Others
  • Handwriting recognition
Unknown
Other features
Other features — specifications for XDA Serra, Black 1X.
SpecificationXDA SerraBlack 1X
Dop
  • Sensors Accelerometer MP3/WAV/WMA player -MP4/WMV/3gp player -Pocket Office -Voice memo -Predictive text input
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - For India